Sounds normal to me. I'm about 14 weeks out from the end of radiation and still have some ulcers on my tongue. the Erbitux contributes, too. Just make sure he shows his docs anythithan dat worked him and definitely any sores that don't heal within a couple of weeks.

Tracy - 33 at diagnosis
SCC right ventral tongue Dx 4/11.
T1N2M0
1st resection 5/11.
Bilateral neck dissection: 2 pos nodes
2nd resection w/graft 6/11.
Erbitux x 11 completed 9/11. IMRT x 30 completed 8/11.
3 month MRI and PET/CT all clear.
6, 9, 12 and 24 month post treatment MRIs all clear.